In U.S. adaptation of The Office, we typically see Dunder-Mifflin Scranton employees/guests walking in and out of the main front door across from the receptionist's desk to enter/exit the office. However, this got me to thinking: surely that building doesn't have only ONE way in and out of an office suite.
Are there any other entrances that are available for use? Especially for the employees in the annex? Granted, yes you wouldn't want guests coming in that way, but what if there was a (real, not Dwight-simulated) fire? How would annex employees get out?